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F. W. FRE'UND.

PRIMERS FOR CARTRIDGES. N0. l8%,854. i Patented Nov. 28,1876.

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' the cartridge shown in Fig. 4.

FRANK w. renown, or onnrnmm, wromse'trnnnrronr.

IMPROVEMENT lN PRIMERS FOR GARTRIDGES.

Specification forming part of Letters Patent No. 84,854, dated November28, 1876; application filed October 12, 1876.

To all whom it may concern:

Be it known that I, FRANK W. FREUND, of Cheyenne, in the county ofLaramie and Territory of Wyoming, have invented certain new and usefulImprovements in Cartridges, which improvements are fully set forth inthe following specification, reference being had to the accompanyingdrawings, in which- Figure 1 is a longitudinal central section of ashot-gun cartridge constructed according to my improved mode. Fig. 2 isa central section of a rifle-cartridge. Fig. 3 is a central section ofone of my improved caps used for igniting the charge of the saidrifle-cartridge. Fig. 4. is a central section of a cartridge with areversed cap. Fig. 5 is a modification of Fig. 6 'is a front view, ofthe same.

The nature of myinvention consists in a removable cap or primer, as willbe hereinafter described and specifically claimed, which is adapted foruse in connection with a cartridge for preventing the escape of gasrearward when the charge is exploded.

The object 'of my invention is to avoid the bad consequences resultingfrom the escape of gaswhen the cartridge is fired, such as burnin g theoperators face and hands, or wounding him' by fragments of the cap or ofthe cartridge-case.

In the drawings, A, in Figure 1, represents a cartridge-shell for ashot-gun, the bottom B of which is provided with a nipple, b, and agas-chamber, B, formed by the rear extension of the cylindrical shell,and closed up by a removable cap or bottom, 0, with a center hole, 0,for the firing pin. The said nipple b is provided with a cap, D, whichhas at its bottom a metal block, d, fitted into it, upon which thefulminate d is fastened, as shown in Fig. 3.

When the cartridge is loaded the cap I) is partly inserted in a recess,0, of the bottom 0, which prevents the blowing out of gases andfragments of the cap. The firing-pin strikes the cap and forces themetal block upon the fulminate and nipple, thereby exploding it.

Fig. 2 is an ordinary Berdan cartridge, as now in use, to which I applymy improved cap. The cartridge A has a bottom, B, which is so shaped asto form an inverted cylinder, 6,

with a raised bottom, 0', upon which the fulminate d is fastened, andwhich bottom has holes 0, to communicate the tire to the powder of thecartridge. The same cap D, as used in cartridge A, Fig. 1, is used incartridge Fig. 2, and the fulminate d may also be fastened to the blockd, instead of to the bottom 0.

The cartridge A shown in Fig. 4 has an open bottom or back, B, with anannular step, B, and an open cylinder, F, into which a cap, D, isinserted bottom forward. The said cap D has a flanged rim, (2, whichfits the annular step, B. The bottom of the said cap has a hole, d, forcommunicating the fire of the fulminate to the cartridge. The cap Dcontains a block, d, fitted into it, and the fnlminate d, which may befastened to the block-d, or to the bottom of the cap D. The block at mayhave a dish-shaped concavity, which serves as a gas-trap.

The cartridge A shown in Fig 5 is of similar construction to that shownin Fig. 4, only that the cylinder F is shorter and the step B deeper, sothat the rim d of the cap D, and the rim 6 of the block d, may bereceived, and a little play allowed to the block for the purpose offiring the fulminate. The cap D has a number of. holes, 11 to allow thefire of the fulminate to pass into the cartridge.

In carrying out my invention after the mode shown in Figs. 1 and 2, acap of ordinary construction, without fnlminate on its bottom, isemployed, and within this cap a block, which serves as an anvil, isplaced, and at the forward end of this block the fnlminate is ar ranged.With a cap or primer thus con strncted the blow of the hammer orfiring-pin causes the metal of the bottom of the cap to be indented, andby this means the anvil is forced forward against the fulminate andcaused to explode it, and if the cap is rupturedby the blow theexplosion will force the block or anvil backward, and thereby close theaperture or openiu g caused by the rupture, and prevent the escape ofgas rearward.

What I claim is- 1. A removable cap or primer foracartridge, having ablock or anvil fitted within it, which block receives the force of theblow of a hammet or firing-pin upon one side and transmits it upon-tbsother side to the fnlminate, snbplicstion for a patent on a metalliccartridge, stantially' as and for the purpose described. this 22d day ofAugust, 1876. v

2. A removable cap or primer for cartridges, e

having an opening or openings in its bottom, FRANK w, FBEUNIL and ablock or anviI arranged within it, snb- Witnesses: stantially asdescribed. E. P. JOHNSON,

Witness my hand in the mstter of my a'p- 0. N. POTTER.

